I have a road dataset with information about the length, speed and drivetime for each segment. I use QGIS 1.9 with the GRASS plugin to do different types of network analysis, but how do I set up the drivetime attribute as the cost for my analysis? Or perhaps the road length?
In GRASS 6/7 you can specify this column when you do the analysis, but not in the GRASS plugin in QGIS? The same applies to my road directions, how can I take into consideration one way streets, which I have information about in the attribute table?
Thanks in advance!